Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	May 05, 2018	Feb. 03, 2018	Apr. 29, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferral percentage of base salary	50.00%
Percentage component of compensation allowed as deferral under deferred compensation plan	100.00%
Long-lived assets held and used	$ 105.4		$ 95.4
Restricted stock units for non-employee directors
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-employee director RSUs shares payable in cash converted to payable in shares		210,302
Non-employee director RSUs payable in cash converted to payable in common stock		$ 6.3